Lifting-truck.



C, MELER.

LH'TNG TRGL MPL10-M103 HLM @ma n; 1913.

ELE v Mmm my 2 1, wm.

2 SEEETSfBEEET 2.

load and then b canne. ia. MILLER; or NEW Yonx, N. Y.

unirme-manoir.

l. VSpecification of Letters Patent.,

To lZZ whom 'it may conc-em." r

Be it, known'tliat I, CARL E'. .M. MILLER, of the city, lcounty, andState of New York, have invented' a new and useful Improvement in*Lifting-Trucks, of which the following isthe full, clear, and exactdescription.

My invention relates to improvements in that class of trucks known aslifting trucks, in which the truck can be wheeled under a the action ofthe handle; raised so as to lift the load from `the lfloor and thuslioldit in'position to be transported to a desired place. The object of myinvention is td simplify the construction of trucks of this class,render the .truck easier 4to operate, construct it. .'so'thalt it can be'turned more readily, and to provide a simplified and positive means forlocking the truck in its raised position,

for releasing the lifted member of the truck, and for freeing thelocking mechanism so that the truck can be backed or pulled forward orhandled easily and effectively.

Reference is to be had to the accompanying drawings forming a partofthis specification, in'which similar reference charac'- tersindicate-corresponding parts in all the views. l

Figure 1 is a longitudinal section of the truck in its unrisedposition.- Fig. 2 is a broken plan view 'of the truck. Fig. 3 is a frontend view: section showing the position of the lifting hookv just. beforeits lifting` engagement. Fig. 5 is a' view similar to Fig. 4, but-Withthe lifting hook in engagement with its cross bar so as to pull theupper member of the frame `forward and upward.. Fig. 6 is a viewsimilarto Fig. 5 but with handle thrown forward and the outer and uppernwmlicr of the truckraised. this view showing also the position (if thelocking arm which holds the truck in raised position. and Fig. 7 is aview similar to Fig. 6 but showing the upper frame pulled forwardslightly further so as Yto release the locking arm and permit the uppermember of the truck frame to be lowcre..

'l`he.truclc has the usual frame l() which is of generally rectangularshape, and the Fig. 4 Vis a longitudinal -ijear end of which is mountedon wheels 11 which run -on the axle 12 as usual. At the frontend of theframe and on the' upper part, is \a cross-bar 13 which is widened at thecenter (see Fig. 2) so as to form the base 14 of the fifth wheel'for theforward Atruck wheels, and to the under side of the member 14 is pivotedby'means of a.bolt'15 or its equivalent, the fiftli wheel or .plete 16which Patented J i1157 21, 1914. Application mea october 17. i913.serial ivo. 795;-649.

turns on the bolt,l and which has a for#- wai-diy extending garb 16merging-in the brackets 4161" (see g. f3) which are arranged in pairsand have-depending ari'ns or members "16s, in whic theiforwrd wheels 17of the truck arejournledi'f Thebrackets 16" havefupwardly extendingparallel ears libetween 4which ispv-.

,oted-the socket memberilS of .the1liandlelj19, which is inserted in thesocket, :andhy which the truck is moved and actuated.- AThe socketmember-18 of the handle is preferably split as shown at 18* infFig. 3,sind in'this is pivoted-ashort rearwardl vextending link 20 whichis.inturn pivoter? to the shank 21 vof thehook 22 which has a Hetextension 23 adapted to rest on the cross bar 24 when the hook is aboutto engage or has just disengaged itself -from the eross-baras shown inFig. 4. The cross-bar24is supported in the ears 25 which y the outer ortop frame 26 of the truck, this frame being -shown best in Figs. 6 und?.The top frame `corresponds in shape .io the lower .frame 10, and isprovided with a. suitable top 27, so that articles can be convenientlycarriedon it.

project upward from" The outer and upper'frame is provided near itsfront and rearends with cross rods 28 which move in inclined cam grooves29 in the sides of the. lower frame 10, as shown in' the several views,so 'that when-,the outer frame 26 if pulled forward, the cross rods 28will slide upon the walls of the slots 29, and the outer member willtherefore vbe raised. There is nothing new about this arrangement. Y

W'hen the frame 26 is raised to the posi' tion shown in Fig. it islocked in its raised position b v the locking arm 30 which is pivotod onthe lforward rod 28, and which is provided with a shoulder 3l adapted todrop presentlyv described, will.ride on the crossar'33 as shown 'in Fi7, so tbat'the' upper Y 1 member can thenl sli e, back to itslowestlgravity into engagement-with 'shoulde'r 32 on the cross-bar 33 which is'secured to the stationary frame `10. This is shown in Fig. 6.' The arm 30 iszalso Awhich when the' arm is pulled forward as position andrelease, its load.

To provide for freeing the hook-22, the

' fshan'k 21 of the hook is providedffnear its 'to -.releaseit e hook22' from the rod 24." -The link is also provided with an abut; 2()vfront end and'just below its pivot, ,with a barb which is adapted toengage a m 36 betweenthe ears 16, ,as in Fig. 1, so t atbv' pulling thehandle forward, the 'barb will in and tilt the shank/.21 so as engagevthe ment 37 which when the' hook 21 is freed and, allowedto swingdownward and rearward, engages the saidhook and prevents it.

'- from swinging too far rearward.

' if the handle is lifted slightly, the

.is swung slight y 'further back, the barb 35` engages the pin.36, andwhen the handle lis 'again moved forwardfso as to enable it to be usedin hauling the truck the hook 21 is swung back tothe osition shownby.dotted lines 1n Fig. 7. en -the load is tobe released 'andthe outermember lowered, the 22 isplaced inV engagement with 'the cross-rod 24;-,and the frame 26 is then ulled forward slightly by tiltin the.` han e19,

a"d this brings the' forwar v-end of the arm 30 beneath the pin 30eonthe frame 10, as shown'in Fi 7, so that the further forward movement othe frame 26 tilts the arm 30, raises the 4"shoulder 31 from theshoulder 32 ,A of the cross-bar 33, and permits the-,pawl 34 U'to rideon the cross-bar as in Fig`";.7, then eef thefr'ame 26 will slide backby graniti' as permitted by the handle 19. From the foregoingdescription. it will beseen that I -have' designed a very simple andeicient hftmg truck, that the front wheels can be released automaticallyso as to turn freely by means ofthe truck handle, and' thatthewholea'airfcan be cheaply made and easily operated- I claim Y Y truclevcomprising a lower provided at itsY ex` treme rear end with a pivotedfree pawl 3i In usingthe truck', it is pushed beneath .e g l Y I .Y1,10%@

tension. projecting forward from the flower l frame' and also mounted-pnwheels, a' vertically swinging h'andle on theA extension, a

second frame connected with the lower frame so that when pulled forwardit will rise on'the lower frame, a hook -and link connection' betweenthe second or movable frame and the handle, and means for releasing thehook by a movementl of the handle. 2.1A liftin truck comprising Va lowervframe mouiite lon wheels and provided with a pivotedforward extensionalso mounted 1o'wer"fra`me and adapted when pulled forward to rise onthe lower frame, a pivoted handle on theiforward extension, e. lpivotedhook carried by the handle, a cross-rod on the upper frame adapted toengage the hook, and means .actuated by the movement of the -handlefor'releasing the hook from the crossbar. z 1

-:3. A lifting truck comprising a frame mounted'on wheels and providedwith a .pivoted 4forward extension also mounted on wheels, a secondframe riding on the lower frame and adapted when pulled forward to riseon the lower frame,va cross bar on the `on wheels, a second frame ridingon the.

forward part of the upper frame, a swingving handle pivoted in theforward extension, avhook pivotally connected with the` handle andadapted to engage the aforesaid cross-rod, and means as a'barb on thehook vand a pin on4 the forward-extension for re-V lasiirg the hookbythe swinging of .the

an e. v

4. Av lifting truck comprising a lower` frame mounted on wheels andprovided with 'a pivoted forward extension also mounted on wheels, anupper frame connected with the lower frame so that when pulled forwardit will rise -on the lower frame, a

swinging handle on the pivoted extension, a

connection between the handle and the upper frame by which the upperframe can be pulled forward by the swinging of` the andle and means forreleasing the connection between the upper frame and handle byavmovement of the handle.

5. The combination of the lower and upper frames, the'latter riding onthe former, of means for raising the upper frame by pulling it forwardon the lower frame, a pivoted arm carried by the upper frame and adaptedto engage an abutment carried by the lower frame, and a pawl at the freeend of the arm adapted to ride on the aforesaid los abutment and releasethe arm from said abutment when the upper frame is pulledto a certainposition.

v6. The combination with the lower and vupper frames, the latter ridingon the` 5 said abutmext when the upper 'frame 1s i Witnsses:

A045533l 4 l lframe and adapted t0 engag an abutmef said arm when theupper ram is moved ay carried by the lowef frame, a pawl atl thepredetermined distance. free end of the arm adapted `to lride on theCARI E M MH LER aforesaid abutment and release the arm from A A' puledlto a certain postox, and means on WARREN B. HUTGHINSON, n the lowerfra-me io engag and 'tilt the afore- M. G. ODONNELL.

